package com.framework.loippi.utils;

import com.framework.loippi.cache.ConfigCache;
import com.framework.loippi.support.Setting;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import com.qiniu.common.QiniuException;
import com.qiniu.common.Zone;
import com.qiniu.storage.Configuration;
import com.qiniu.storage.Region;
import com.qiniu.storage.UploadManager;
import com.qiniu.util.Auth;
import freemarker.template.TemplateException;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.URL;
import java.net.URLConnection;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;

public class QrCodeCreateUtil {


    private static final int QRCOLOR = 0xFF000000; // 默认是黑色
    private static final int BGWHITE = 0xFFFFFFFF; // 背景颜色

    private static final int WIDTH = 400; // 二维码宽
    private static final int HEIGHT = 400; // 二维码高


    // 用于设置QR二维码参数
    private static HashMap<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>() {
        private static final long serialVersionUID = 1L;

        {
            put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);// 设置QR二维码的纠错级别（H为最高级别）具体级别信息
            put(EncodeHintType.CHARACTER_SET, "utf-8");// 设置编码方式
            put(EncodeHintType.MARGIN, 0);
        }
    };

    public static void main(String[] args) throws WriterException {
        File file = new File("");
        //项目class路径,需要确认
        String path2;
        try {
            path2 = file.getCanonicalPath();
//			path2 = file.getClass().getResource("/").getPath();
        } catch (IOException e1) {
            path2 = file.getClass().getResource("/").getPath();
        }
        String url = path2 + "\\aicangGoodsQR\\" + UUID.randomUUID().toString().replace("-", "") + ".png";
        System.out.println(url);
        File QrCodeFile = new File(url);
        if (!QrCodeFile.getParentFile().exists()) {
            QrCodeFile.getParentFile().mkdirs();
        }
        String path = "www.baidu.com";
        QrCodeCreateUtil.drawLogoQRCode(null, QrCodeFile, path, null);

    }

    // 生成带logo的二维码图片
    public static void drawLogoQRCode(File logoFile, File codeFile, String qrUrl, String note) {
        try {
            MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
            // 参数顺序分别为：编码内容，编码类型，生成图片宽度，生成图片高度，设置参数
            BitMatrix bm = multiFormatWriter.encode(qrUrl, BarcodeFormat.QR_CODE, WIDTH, HEIGHT, hints);
            BufferedImage image = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB);

            // 开始利用二维码数据创建Bitmap图片，分别设为黑（0xFFFFFFFF）白（0xFF000000）两色
            for (int x = 0; x < WIDTH; x++) {
                for (int y = 0; y < HEIGHT; y++) {
                    image.setRGB(x, y, bm.get(x, y) ? QRCOLOR : BGWHITE);
                }
            }

            int width = image.getWidth();
            int height = image.getHeight();
            if (logoFile != null && logoFile.exists()) {
                // 构建绘图对象
                Graphics2D g = image.createGraphics();
                // 读取Logo图片
                BufferedImage logo = ImageIO.read(logoFile);
                // 开始绘制logo图片
                g.drawImage(logo, width * 2 / 5, height * 2 / 5, width * 2 / 10, height * 2 / 10, null);
                g.dispose();
                logo.flush();
            }

            // 自定义文本描述
            if (note != null) {
                // 新的图片，把带logo的二维码下面加上文字
                BufferedImage outImage = new BufferedImage(400, 445, BufferedImage.TYPE_4BYTE_ABGR);
                Graphics2D outg = outImage.createGraphics();
                // 画二维码到新的面板
                outg.drawImage(image, 0, 0, image.getWidth(), image.getHeight(), null);
                // 画文字到新的面板
                outg.setColor(Color.BLACK);
                outg.setFont(new Font("楷体", Font.BOLD, 30)); // 字体、字型、字号
                int strWidth = outg.getFontMetrics().stringWidth(note);
                if (strWidth > 399) {
                    // //长度过长就截取前面部分
                    // 长度过长就换行
                    String note1 = note.substring(0, note.length() / 2);
                    String note2 = note.substring(note.length() / 2, note.length());
                    int strWidth1 = outg.getFontMetrics().stringWidth(note1);
                    int strWidth2 = outg.getFontMetrics().stringWidth(note2);
                    outg.drawString(note1, 200 - strWidth1 / 2, height + (outImage.getHeight() - height) / 2 + 12);
                    BufferedImage outImage2 = new BufferedImage(400, 485, BufferedImage.TYPE_4BYTE_ABGR);
                    Graphics2D outg2 = outImage2.createGraphics();
                    outg2.drawImage(outImage, 0, 0, outImage.getWidth(), outImage.getHeight(), null);
                    outg2.setColor(Color.BLACK);
                    outg2.setFont(new Font("宋体", Font.BOLD, 30)); // 字体、字型、字号
                    outg2.drawString(note2, 200 - strWidth2 / 2, outImage.getHeight() + (outImage2.getHeight() - outImage.getHeight()) / 2 + 5);
                    outg2.dispose();
                    outImage2.flush();
                    outImage = outImage2;
                } else {
                    outg.drawString(note, 200 - strWidth / 2, height + (outImage.getHeight() - height) / 2 + 12); // 画文字
                }
                outg.dispose();
                outImage.flush();
                image = outImage;
            }

            image.flush();

            ImageIO.write(image, "png", codeFile); // TODO
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    /**
     * 图片保存到本地
     *
     * @param imgUrl 七牛图片路径
     * @return
     * @throws IOException
     * @throws TemplateException
     */
    public static String inputImage(String imgUrl) {
        String destPath = null;
        // 设置数据缓冲
        byte[] bs = new byte[1024 * 2];
        // 读取到的数据长度
        int len;
        // 构造URL
        URL url;
        try {
            url = new URL(imgUrl);
            // 打开URL连接
            URLConnection con = url.openConnection();
            // 得到URL的输入流
            InputStream input = con.getInputStream();
            Setting setting = SettingUtils.get();
            String siteUrl = setting.getSiteUrl();
            String uploadPath = setting.getImageUploadPath();
            Map<String, Object> model = new HashMap<String, Object>();
            model.put("uuid", getUUID());
            File file = new File("");
            //项目class路径,需要确认
//			String path2 = file.getClass().getResource("/").getPath();
            String path2 = file.getCanonicalPath();
            String path = FreemarkerUtils.process(uploadPath, model);
            destPath = path2 + "/TTX" + path + getUUID() + ".png";
            //File destFile = new File(servletContext.getRealPath(destPath));
            //创建文件
            File destFile = new File(destPath);
            if (!destFile.getParentFile().exists()) {
                destFile.getParentFile().mkdirs();
            }
            // 输出的文件流保存图片至本地
            OutputStream os = new FileOutputStream(destPath);

            while ((len = input.read(bs)) != -1) {
                os.write(bs, 0, len);
            }
            os.close();
            input.close();
        } catch (Exception e) {
            // TODO Auto-generated catch block
//			e.printStackTrace();
            return null;
        } finally {
        }
        return destPath;
    }

    /**
     * 默认生成图片文件到本地
     * path - 扫描访问的URL
     *
     * @return 二维码在本地的保存路径
     */
    public static String QR_default_img(String path) {
        File file = new File("");
        //项目class路径,需要确认
        String path2;
        try {
            path2 = file.getCanonicalPath();
        } catch (IOException e1) {
            path2 = file.getClass().getResource("/").getPath();
        }
        String url = path2 + "\\aicangGoodsQR\\" + UUID.randomUUID().toString().replace("-", "") + ".png";
        System.out.println(url);
        File QrCodeFile = new File(url);
        if (!QrCodeFile.getParentFile().exists()) {
            QrCodeFile.getParentFile().mkdirs();
        }
        QrCodeCreateUtil.drawLogoQRCode(null, QrCodeFile, path, null);
        return url;
    }

    /**
     * 把二维码图片上传七牛云
     *
     * @param url 项目本地文件路径（要上传的图片路径）
     * @return
     * @throws QiniuException
     */
    public static String QR_code_upload(String url) {
        if (null == url) {
            return null;
        }
        Configuration config = new Configuration();
        UploadManager uploadManager = new UploadManager(config);
        Auth auth = Auth.create(ConfigCache.getConfig("qiniu.accessKey"), ConfigCache.getConfig("qiniu.secretKey"));
        String filename = UUID.randomUUID().toString();
        File f = new File(url);
        try {
            uploadManager.put(f, filename, auth.uploadToken(ConfigCache.getConfig("qiniu.bucket")));
        } catch (QiniuException e) {
            // TODO Auto-generated catch block
//				e.printStackTrace();
            return null;
        }
        String domain = ConfigCache.getConfig("qiniu.url");
        return domain.concat(filename);
    }

    public static String getUUID() {
        return UUID.randomUUID().toString().replace("-", "");
    }

}
